Clutch and brake holder for tractors



Patented Jan. 20, 1925.

UNITED STATES JACOB wiens BULLER, or HILLsBoaO, Kansas.

CLUTCH AND BRAKE HOLDER Fon TaACTORs.

Application led July 8, 1924. Serial No. 724,831.

To ZZ 11i/10m t may concern:

Be it known that I, JACOB lV.' BULLER, a citizen of the United States of America, and a resident of Hillsboro, in the county of Marion and State of Kansas, have invented a new and Improved Clutch and Brake Holder for Tractors, of which the following is a description.

My invention relates to a clutch and brake holder tor tractors and more particularly designed for use on Fordson tractors.

The general object of my invention is to provide a novel clutch and brake holder' so termed and arranged and so disposed relatively to the clutch pedal that the holder will automatically tend to assume an unlocking position but may be thrown into locking position with the depression of the pedal; a further object being to utilize the clutch spring to maintain the holder in locking position.

More specically, the invention has for an object to provide a device for the indicated purpose characterized by strength and simplicity and the facility with which the device may be assembled, emplaced and operated.

The manner and means whereby the above and other objects are obtained will clearly appear as the description proceeds.

Reference is to be had to the accompanying drawings forming a part of this specilication, it being understood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a perspective view of a clutch and brake holder embodying my invention, showing the same emplaced on a tractor, portions ot which are indicated in dotted lines- Figure 2 is a similar view taken at a diflferent angle and looking more toward the liront ol the tractor;

Figure 3 is a partly sectional side elevation of the holder and the clutch pedal;

Figure 4 is a detail in vertical section in a plane indicated by the line @-4, Figure 3.

In the illustrated example of my invention, the letter a indicates the dash frame of a tractor; o, the clutch pedal; and o and d trame members oit the tractor.

In accordance with my invention I provide a clamp bracket 10 adapted to be allixed to the clutch pedal l), use being made for the purpose in the illustrated example of a U-bolt` or shackle 11 embracing the clutch pedal Z) and having nuts 12. A lock arm 13 is pivoted to the upper end of the bracket 10. For the purposesaid bracket 10 is formed with a lateral hub 14; which is entered in a transverse hole 15 in said arm 13. A bolt 16 passes through the bracket 10 at the hub 14 and receives a nut 17 and washer 18.

Means is provided to lock the arm 13 to the dash trame member a, the means in the illustrated example consisting of clamp jaws 19, 20, the latter of angle form, the clamp being completed by a transverse bolt 21, passing throughy said jaws 'and receiving a nut 2Q to firmly bind the jaws on the lrame member c. A lateral guide and locking member 23 is integral with the jaw 19 and has a vertical hole 123 through which the arm 13 passes. A fixed dog 24 is formed Von the member 23 at an end of the hole 123 and is adapted to engage one of a plurality of teeth 25 on said arm 13. The .interdental spaces'26 of arm 131 are at a sharp angle and the dog 241- is correspondingly disposed so that when the said arm is moved to a position to be engaged by the dog 211, the tension of the usual clutch -spring (not lsho-wn) exerting upward pressure on the bracket 10 and arm 13 will maintain the dog 24 in engagement with the toothed edge of said arm 13.

In order to normally give the lock arm 13 a tendency to assume an unlocked position I provide a weight arm 27' extending laterally from said lock arm. The weight arm 27 is so disposed that it tends to maintain the lock arm 13 against that end of the slot 123, remote from the locking dog 24C to thus hold said lock arm outot` engagement with said dog. Thus, it becomes necessary to manually throw the lock arm 13 into locking position which is readily done as follows: The lower end 28 of the lock arm 13, that is to say, the end below the pivot bolt 16 is given a hook form, the bill of the hook lying adjacent to the clutch pedal Z) so that the foot of the driver may as indicated in dotted lines, Figure 3, depress t-he clutch pedal b and at the same time by engaging the hook 28 rock the arm 13 to a position to be enga-ged with dog 24 when the clutch pedal (b) is relieved of the pressure of the foot and the pedal allowed to rock upwardly under the tension of the usual. clutch spring.

By the described arrangement the clutch pedalmay jbe .operated in"v the samev manner as if theclutch holding device was not present; yet, the lock arm may be optionally thrown into the locking,positionvwhenvthe operator places his toot on the hook 28. My

improved device is `especially usetulwhen doing what is generally termed belt Work with the tractor as Welleas-Whenthe stopping of the tractor is necessary for a4 short time as thiscan be" effected 'Without shifting tin-ued run-ning. A p

`would state in lconclusion that While the illustrated 'example vconstitutes a practical rveilbodi-ment otmyinyention, I ldo not limit *myself 'strictly' to the exact details v'herein 1 clutch andi brakef and comprising aibracket "having means to clamp it to the clutch pedal :of the'tractor, lto* be" sub-j ect to the clutch spring of thetractor-so thatsaidbi-acket normally is given' a ytendency f to kvmove up- `vWadly with the clutch; pedal, a -lock armV rpivoted 'between itsA endsy to saidA bracket to frock in'approximatelya verticalf'plane, ra vsecond Vbracket"having means to'clamp it to a liXed framel part of the VtractorV above the irstbracket, saidsecond bracket'having lateral Aguide-?member"forme'd with a vertical*4 slot therein through which? 'the upper portionotI the lock arm' extends, said lock armbelng vformed on 'an edge' thercotI with teeth and presenting interdental spaces at a Sharpangle, saidteeth disposed toward one end of said slot, a fixed locking dog on said l'ateralguide 'member at that end adjacent the said teeth, and a Weight arm on the .'loekarm normally tending to dispose the lock arm at that end of the slot remote from the locking dog, -said lockl arm below its pivotbeing inthe form of a hook disposed yadjacent to the' firstlmentioned bracket so -as .toflie adjacent tothe clutch'` pedal, said lock armlibeing` dependent for engagement l"Wi'thsaid doglon lthe -npward movement of: "the irst bracket` and the lock arm under the pressure exerted on the clutch pedaly by the ""eliit'clis ring.

12. evice of the class described adapted to be `eniplace'd on a tractor for hold-ing the clutch-fand brake, said 'device including a b'raeket'lhaiing 'meansi'to` clamp it to the clutch' 'pedali-of the tractor,` Ato be subject to the upward'pressure exerted on the clutch *pedalby Vthe clutch brake of the tractor, a ylock armj-pivoted between its ends on said bracket, av clamp bracket adapted to be fsecure'd to axed frame part of the tractor, `a"rnenl-ber on ysaid clamp bracket embracing the lock arm above the pivot thereof, `co engagingulocking devices on the lock arm and onrsaid member of the clamp bracket,

andialweighted arm on the lock arm nor mallytending to hold the lock arm in unlocking position.

*JACOB 'VVIENS BULLE R. 

